3 years ago

2x -4y=20 X=4 System of equations

Mathematics

1 answer:

Gennadij [26K]3 years ago

3 0

Answer:

Step-by-step explanation:

2(4) - 4y = 20

8 - 4y = 20

-4y = 12

y = -3

x = 4

(4, -3)

You might be interested in

If the following fractions were converted to decimals, which one would result in a repeating decimal?

Sveta_85 [38]

B. 3/7
...................

4 0

3 years ago

Read 2 more answers

What is the converse of “if it is raining then we will not go the the beach

Dmitrij [34]

If we do not go to the beach, it is raining

4 0

3 years ago

Sold the equation. Round to the nearest hundredth. <br><br>17 · <img src="https://tex.z-dn.net/?f=1.8%5E%7B-x%2B7%7D%20%3D%205"

svetlana [45]

Answer:

Final answer is approx x=4.26.

Step-by-step explanation:

Given equation is $1.8^{-x+7} = 5$

Now we need to solve equation $1.8^{-x+7} = 5$ and round to the nearest hundredth.

$1.8^{-x+7} = 5$

$\log(1.8^{-x+7}) = \log(5)$

$(-x+7)\log(1.8) = \log(5)$

$(-x+7) = \frac{\log(5)}{\log(1.8)}$

$(-x+7) = \frac{0.698970004336}{0.255272505103}$

$-x+7 = 2.73813274192$

$-x = 2.73813274192-7$

$-x =−4.26186725808$

$x =4.26186725808$

Round to the nearest hundredth.

Hence final answer is approx x=4.26.

4 0

2 years ago

Find the solution to the system by graphing

ddd [48]

After graphing the lines, you can see that the solution is (4, -1)

3 0

2 years ago

What is the equation of a sine function with an amplitude of 2 and a period of 4pi.

Setler [38]

Answer:

Step-by-step explanation:

7 0

2 years ago